This contribution focuses on the possibility to link and visualize the relation between a 3D representation of an architectural building and its conceptual description by a graph-based browser interface. For this reason it is used a 3D model and a web application, the Nubes Visum. This platform utilizes a semantic description model that is defined by a semantic level, a structural level and a representation one. To have a new approach at the stored information we added to Nubes Visum another interface that is divided into two parts: the interactive 3D model and an interactive graph. Being a tree structure every node can have children with the same characteristics. This graph allows to establish a privileged link between the 3D representation of buildings and the concepts that describe them in the world of knowledge. The model's hierarchy is expressed by the tree hierarchies of the graph and in the same web page it is possible to choose the graph related to one of the three semantic description levels. By this bilateral relation between information written in the graph and elements describing the object morphology, is possible to perform information searches in two directions: the seek related to the selected entities in the 3D scene and search of entities in the 3D scene trough queries obtained from database.